Hi good day all, im trying to work with this thing, but not sure how it works, the circuit is shown below, im trying to make the air goes in and out of a balloon, to imitate human lungs.
Thanks for your time
So what is the problem?
Those are industrial values and the pressurized air is part of the working.
Can you buy normal valves ?
What is your air pump ?
I forgot the name, they could be called: direct acting solenoid air valves.
The normal 12V values can be micro valves or big valves for a car horn.
I found these pictures here:
Be careful with a big and sturdy balloon. If you make a mistake in the sketch, and the balloon bursts, then it can break your windows.
You might not need valves at all. You can probably do the same with two pumps, or one pump and a valve as outlet. A pump can be in the same price range as a valve.
Which pressure sensor are you going to use ?
Can you use a Arduino Uno ?
For the ESP32 you need a relay module that is compatible with the 3.3V signals of the ESP32.
the problem mainly is the valve didnt work as proposed by this picture
In my case, the air keeps going into the balloon despite the state of the valve. Im just wondering is it my understanding of air path is wrong.
ahh thanks for the suggestions on changing pump, but i guess i have to work with what i have right now.
Im using ESP32 because im planning to control the Breath per minute using my phone.
I assume the ballon is connected to B but I confused about the pump.
Your pump can act as both a pressure and vacuum pump?
If you operate the valve without the relay by connecting/disconnecting the 24V supply does it work?
Yes it works,
btw after i tried connecting the pump with adapter, and use the 24V battery just to supply the valve with relay, it is working fine.
And then now when i connect back to the original circuit, the battery supplying for (pump and valve with relay), everything is working fine, im not sure why, suspect maybe voltage not enough to supply both pump and valve, but now it is okay.
Or maybe your battery is not fully charged or you just had a bad connection somewhere.
Anyway. glad you got it working
Have a nice day.
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You do not need a "circuit" to make it work. Just the 24 volt battery and your air compressor. In fact, you need to know that before thinking of a circuit.
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